---
description: "Swift documentation for '...'"
layout: "default"
keywords: ""
root: "/v5.1"
title: "..."
---

<div class="intro-declaration"><code class="language-swift">func ...(_:)(_: UnboundedRange_)</code></div><div class="discussion comment"><p>Creates an unbounded range expression.
</p>
<p>The unbounded range operator (<code>...</code>) is valid only within a collection's
subscript.</p>
</div>